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A centrifugal fluidized bed drying and sorting system and drying and sorting method

A fluidized bed drying and sorting system technology, applied in chemical instruments and methods, drying solid materials, drying gas layout, etc., can solve the problems of small processing capacity, inability to perform drying and sorting simultaneously, and high energy consumption. Guaranteed effect of stability and continuity

Active Publication Date: 2020-05-22
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above analysis, the embodiment of the present invention aims to provide a centrifugal fluidized bed drying and sorting system and a drying and sorting method, which are used to solve the common problem of low processing capacity and high energy consumption in wet coal drying and sorting devices in the prior art. , poor continuity and inability to dry and sort at the same time and other technical problems

Method used

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  • A centrifugal fluidized bed drying and sorting system and drying and sorting method
  • A centrifugal fluidized bed drying and sorting system and drying and sorting method
  • A centrifugal fluidized bed drying and sorting system and drying and sorting method

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Embodiment 1

[0035] The invention discloses a centrifugal fluidized bed drying and sorting system, such as Figure 1 to Figure 3 As shown, it includes a pre-drying unit and a dry sorting unit; the pre-drying unit is arranged above the dry sorting unit; the pre-drying unit includes a first air distribution chamber 7, a first mandrel 14, and a first hole provided with a plurality of first holes. An air distribution tube 8, the first air distribution tube 8 includes a first drum 15; the drying and sorting unit includes a second drum 19, a second air distribution tube 11, a second air distribution chamber 10 and a second mandrel 18, The area between the second rotating drum 19 and the second air distribution tube 11 is the interlayer area 20. The second rotating drum 19 and the second air distribution tube 11 are provided with a plurality of second holes; the air volume of the first air distribution chamber 7 is greater than The air volume of the second air distribution chamber 10.

[0036] Speci...

Embodiment 2

[0059] The invention also provides a centrifugal fluidized bed drying and sorting method, which specifically includes the following processes:

[0060] Air supply means: start the blower 1 to store gas in the wind drum 2, and the gas from the exhaust port of the wind drum 2 generates high-temperature hot air through the air heater 3, and controls the first flow meter, the first regulating valve 4 and the second flow rate. The first air distribution chamber 7 and the second air distribution chamber 10 are supplied with hot air volume; among them, the hot air in the first air distribution chamber 7 enters the first rotation through the first air distribution tube 8 The materials are pre-dried in the drum 15; the hot air in the second air distribution chamber 10 enters the second drum 19 through the second air distribution cylinder 11 and the interlayer area 20, and the materials are dried and separated.

[0061] The centrifugal fluidized bed pre-drying means that the material is fed ...

Embodiment 3

[0065] This embodiment is the drying and sorting of fine-grained coal. The centrifugal fluidized bed drying and sorting system provided in Example 1 and the centrifugal fluidized bed drying and sorting method provided in Example 2 are used. The specific implementation process is as follows:

[0066] Lignite with a particle size of 1-6 mm, a moisture content of 38.6% and an ash content of 24.86% is selected for drying and sorting. The expected requirements for dry separation are: lignite concentrate ash content is less than 18%, yield is more than 75%, and moisture content is less than 13%.

[0067] Turn on blower 1 and blow a large amount of air into wind drum 2. After the pressure gauge value reaches 0.4 MPa, turn off blower 1, open the air outlet of wind drum 2, wind enters air heater 3, set heating temperature to 110 ℃, pass Control the first flow meter and the first regulating valve 4 and the second flow meter and the second regulating valve 5 so that the hot air enters the fir...

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Abstract

The invention relates to a centrifugal fluidized bed drying and sorting system and a drying and sorting method, and belongs to the technical field of mineral drying and sorting devices. The technicalproblems of small processing capacity, high energy consumption, poor continuity and the like existing in existing wet mineral drying and sorting devices are solved. The system comprises a pre-drying unit and a drying and sorting unit, the pre-drying unit comprises a first air distribution chamber, a first mandrel and a first air distribution cylinder provided with a plurality of first holes, the first air distribution cylinder comprises a first rotary drum, the drying and sorting unit comprises a second rotary drum, a second air distribution cylinder, a second air distribution chamber and a second mandrel, the area between the second rotary drum and the second air distribution cylinder is a sandwich area, and the second rotary drum and the second air distribution cylinder are provided witha plurality of second holes, and the air quantity of the first air distribution chamber is larger than that of the second air distribution chamber. A pre-drying centrifugal fluidized bed and a dryingseparation centrifugal fluidized bed are adopted for tandem type design, the mineral is subjected to primary drying and then is subjected to subsequent drying and sorting, and the purpose of dry dehydration and upgrading of the mineral is achieved.

Description

Technical field [0001] The invention relates to the technical field of mineral drying and sorting devices, in particular to a centrifugal fluidized bed drying and sorting system and a dry sorting method. Background technique [0002] In recent years, with the rapid development of my country's economy, the role of energy resources in economic development has become increasingly prominent. Coal resources occupies a dominant position in my country's energy consumption structure, and the mining and utilization of coal has been paid more and more attention. With the consumption and use of high-quality coal resources, the mining, processing and utilization of low-rank coal is imperative. As a typical low-rank coal, lignite is a kind of coal with high water content and easy to silt. It is easy to oxidize in the air and is not easy to store and transport. However, its reserves are abundant, mainly distributed in Inner Mongolia, Yunnan, Northeast, Sichuan and other regions . Due to its...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F26B3/08F26B21/00F26B21/10B07B7/083B07B7/10
CPCB07B7/083B07B7/10F26B3/082F26B21/001F26B21/003F26B21/004F26B21/10
Inventor 贺靖峰白强段晨龙朱凌涛江海深周恩会
Owner CHINA UNIV OF MINING & TECH
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